Severe Thunderstorm Warnings
Thunderstorm Warning(s) in force for:
No Thunderstorm Warning in force for:
Northland Radar Area, Auckland Radar Area, Bay of Plenty Radar Area, Gisborne / Hawke's Bay Radar Area, Taranaki Radar Area, Wellington Radar Area, Canterbury Radar Area, Westland Radar Area, Southland Radar Area
In New Zealand, MetService classifies a thunderstorm as severe if one or more of the following criteria are met:
Heavy rain (from thunderstorms): Rainfall of 25 millimetres per hour, or more.
Large hail: Hailstones 20 millimetres in diameter, or larger.
Strong wind gusts (from thunderstorms): Gusts of 110 kilometres per hour / 60 knots or stronger.
Damaging tornadoes: Fujita F1 (wind speeds greater than 116 kilometres per hour / 63 knots) or stronger.
Note: some tornadic systems such as funnel clouds, waterspouts and small land-based tornadoes are possible with thunderstorms that may not be classified as severe.